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package org.apache.impala.planner;

import java.util.Set;

/**
 * The all_eligible tuple cache placement policy simply returns all the eligible
 * locations. This null policy is useful for correctness testing, because we want
 * to check correctness for all locations without regard for cost.
 */
public class TupleCacheAllEligiblePolicy implements TupleCachePlacementPolicy {
  public Set<PlanNode> getFinalCachingLocations(Set<PlanNode> eligibleLocations) {
    return eligibleLocations;
  }
}
